Q5. (25pt.) In the figure below, frames are generated at node

A

and sent to node

C

through node

B

.\ Determine the minimum transmission rate required between nodes

B

and

C

so that the frames at node

B

\ are not lost, considering the following:\ The data rate between

A

and

B

is 100 Kbps.\ The propagation delay on both links is

10\\\\mu sec/km

.\ The lines are full duplex.\

,

All data frames are 1000 bits long; ACK frames are separate frames of negligible length.\ Between

A

and

B

, the go-back-n protocol with a window size of 4 is used.\ Between

B

and

C

, the stop-and-wait protocol is used.\ There is no error, and the processing delay at the nodes is negligible,\ The buffer space at B is limited with the requirements of the protocols.

Q5. (25pt.) In the figure below, frames are generated at node A and sent to node C through node B. Determine the minimum transmission rate required between nodes B and C so that the frames at node are not lost, considering the following: - The data rate between A and B is 100 Kbps. - The propagation delay on both links is 10sec/km. - The lines are full duplex. - All data frames are 1000 bits long; ACK frames are separate frames of negligible length. - Between A and B, the go-back-n protocol with a window size of 4 is used. - Between B and C, the stop-and-wait protocol is used. - There is no error, and the processing delay at the nodes is negligible, - The buffer space at B is limited with the requirements of the protocols